pv/mainwindow.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  */
  20
  21 #include <cassert>
  22
  23 #ifdef ENABLE_DECODE
  24 #include <libsigrokdecode/libsigrokdecode.h>
  25 #endif
  26
  27 #include <algorithm>
  28 #include <iterator>
  29
  30 #include <boost/algorithm/string/join.hpp>
  31
  32 #include <QAction>
  33 #include <QApplication>
  34 #include <QButtonGroup>
  35 #include <QCloseEvent>
  36 #include <QFileDialog>
  37 #include <QMessageBox>
  38 #include <QMenu>
  39 #include <QMenuBar>
  40 #include <QSettings>
  41 #include <QStatusBar>
  42 #include <QVBoxLayout>
  43 #include <QWidget>
  44
  45 #include <QDockWidget>
  46
  47 #include "mainwindow.hpp"
  48
  49 #include "devicemanager.hpp"
  50 #include "util.hpp"
  51 #include "data/segment.hpp"
  52 #include "devices/hardwaredevice.hpp"
  53 #include "devices/inputfile.hpp"
  54 #include "devices/sessionfile.hpp"
  55 #include "dialogs/about.hpp"
  56 #include "dialogs/connect.hpp"
  57 #include "dialogs/inputoutputoptions.hpp"
  58 #include "dialogs/storeprogress.hpp"
  59 #include "toolbars/mainbar.hpp"
  60 #include "view/logicsignal.hpp"
  61 #include "view/view.hpp"
  62 #include "widgets/exportmenu.hpp"
  63 #include "widgets/importmenu.hpp"
  64 #ifdef ENABLE_DECODE
  65 #include "widgets/decodermenu.hpp"
  66 #endif
  67 #include "widgets/hidingmenubar.hpp"
  68
  69 #include <inttypes.h>
  70 #include <stdint.h>
  71 #include <stdarg.h>
  72 #include <glib.h>
  73 #include <libsigrokcxx/libsigrokcxx.hpp>
  74
  75 using std::cerr;
  76 using std::endl;
  77 using std::list;
  78 using std::make_shared;
  79 using std::map;
  80 using std::max;
  81 using std::pair;
  82 using std::shared_ptr;
  83 using std::string;
  84 using std::vector;
  85
  86 using boost::algorithm::join;
  87
  88 using sigrok::Error;
  89 using sigrok::OutputFormat;
  90 using sigrok::InputFormat;
  91
  92 namespace pv {
  93
  94 namespace view {
  95 class ViewItem;
  96 }
  97
  98 const char *MainWindow::SettingOpenDirectory = "MainWindow/OpenDirectory";
  99 const char *MainWindow::SettingSaveDirectory = "MainWindow/SaveDirectory";
 100
 101 MainWindow::MainWindow(DeviceManager &device_manager,
 102         string open_file_name, string open_file_format,
 103         QWidget *parent) :
 104         QMainWindow(parent),
 105         device_manager_(device_manager),
 106         session_(device_manager),
 107         action_open_(new QAction(this)),
 108         action_save_as_(new QAction(this)),
 109         action_save_selection_as_(new QAction(this)),
 110         action_connect_(new QAction(this)),
 111         action_quit_(new QAction(this)),
 112         action_view_zoom_in_(new QAction(this)),
 113         action_view_zoom_out_(new QAction(this)),
 114         action_view_zoom_fit_(new QAction(this)),
 115         action_view_zoom_one_to_one_(new QAction(this)),
 116         action_view_sticky_scrolling_(new QAction(this)),
 117         action_view_coloured_bg_(new QAction(this)),
 118         action_view_show_cursors_(new QAction(this)),
 119         action_about_(new QAction(this))
 120 #ifdef ENABLE_DECODE
 121         , menu_decoders_add_(new pv::widgets::DecoderMenu(this, true))
 122 #endif
 123 {
 124         qRegisterMetaType<util::Timestamp>("util::Timestamp");
 125
 126         setup_ui();
 127         restore_ui_settings();
 128         if (open_file_name.empty())
 129                 select_init_device();
 130         else
 131                 load_init_file(open_file_name, open_file_format);
 132 }
 133
 134 QAction* MainWindow::action_open() const
 135 {
 136         return action_open_;
 137 }
 138
 139 QAction* MainWindow::action_save_as() const
 140 {
 141         return action_save_as_;
 142 }
 143
 144 QAction* MainWindow::action_save_selection_as() const
 145 {
 146         return action_save_selection_as_;
 147 }
 148
 149 QAction* MainWindow::action_connect() const
 150 {
 151         return action_connect_;
 152 }
 153
 154 QAction* MainWindow::action_quit() const
 155 {
 156         return action_quit_;
 157 }
 158
 159 QAction* MainWindow::action_view_zoom_in() const
 160 {
 161         return action_view_zoom_in_;
 162 }
 163
 164 QAction* MainWindow::action_view_zoom_out() const
 165 {
 166         return action_view_zoom_out_;
 167 }
 168
 169 QAction* MainWindow::action_view_zoom_fit() const
 170 {
 171         return action_view_zoom_fit_;
 172 }
 173
 174 QAction* MainWindow::action_view_zoom_one_to_one() const
 175 {
 176         return action_view_zoom_one_to_one_;
 177 }
 178
 179 QAction* MainWindow::action_view_sticky_scrolling() const
 180 {
 181         return action_view_sticky_scrolling_;
 182 }
 183
 184 QAction* MainWindow::action_view_coloured_bg() const
 185 {
 186         return action_view_coloured_bg_;
 187 }
 188
 189 QAction* MainWindow::action_view_show_cursors() const
 190 {
 191         return action_view_show_cursors_;
 192 }
 193
 194 QAction* MainWindow::action_about() const
 195 {
 196         return action_about_;
 197 }
 198
 199 #ifdef ENABLE_DECODE
 200 QMenu* MainWindow::menu_decoder_add() const
 201 {
 202         return menu_decoders_add_;
 203 }
 204 #endif
 205
 206 shared_ptr<pv::view::View> MainWindow::get_active_view() const
 207 {
 208         // If there's only one view, use it...
 209         if (view_docks_.size() == 1)
 210                 return view_docks_.begin()->second;
 211
 212         // ...otherwise find the dock widget the widget with focus is contained in
 213         QObject *w = QApplication::focusWidget();
 214         QDockWidget *dock = 0;
 215
 216         while (w) {
 217             dock = qobject_cast<QDockWidget*>(w);
 218             if (dock)
 219                 break;
 220             w = w->parent();
 221         }
 222
 223         // Get the view contained in the dock widget
 224         for (auto entry : view_docks_)
 225                 if (entry.first.get() == dock)
 226                         return entry.second;
 227
 228         return shared_ptr<pv::view::View>();
 229 }
 230
 231 void MainWindow::run_stop()
 232 {
 233         switch (session_.get_capture_state()) {
 234         case Session::Stopped:
 235                 session_.start_capture([&](QString message) {
 236                         session_error("Capture failed", message); });
 237                 break;
 238         case Session::AwaitingTrigger:
 239         case Session::Running:
 240                 session_.stop_capture();
 241                 break;
 242         }
 243 }
 244
 245 void MainWindow::select_device(shared_ptr<devices::Device> device)
 246 {
 247         try {
 248                 if (device)
 249                         session_.set_device(device);
 250                 else
 251                         session_.set_default_device();
 252         } catch (const QString &e) {
 253                 QMessageBox msg(this);
 254                 msg.setText(e);
 255                 msg.setInformativeText(tr("Failed to Select Device"));
 256                 msg.setStandardButtons(QMessageBox::Ok);
 257                 msg.setIcon(QMessageBox::Warning);
 258                 msg.exec();
 259         }
 260 }
 261
 262 void MainWindow::export_file(shared_ptr<OutputFormat> format,
 263         bool selection_only)
 264 {
 265         using pv::dialogs::StoreProgress;
 266
 267         // Make sure there's a view selected to pull the data from
 268         shared_ptr<pv::view::View> view = get_active_view();
 269         if (!view) {
 270                 show_session_error(tr("No View Selected"), tr("Please click on the " \
 271                                 "view whose data you want to save and try again."));
 272                 return;
 273         }
 274
 275         // Stop any currently running capture session
 276         session_.stop_capture();
 277
 278         QSettings settings;
 279         const QString dir = settings.value(SettingSaveDirectory).toString();
 280
 281         std::pair<uint64_t, uint64_t> sample_range;
 282
 283         // Selection only? Verify that the cursors are active and fetch their values
 284         if (selection_only) {
 285                 if (!view->cursors()->enabled()) {
 286                         show_session_error(tr("Missing Cursors"), tr("You need to set the " \
 287                                         "cursors before you can save the data enclosed by them " \
 288                                         "to a session file (e.g. using ALT-V - Show Cursors)."));
 289                         return;
 290                 }
 291
 292                 const double samplerate = session_.get_samplerate();
 293
 294                 const pv::util::Timestamp& start_time = view->cursors()->first()->time();
 295                 const pv::util::Timestamp& end_time = view->cursors()->second()->time();
 296
 297                 const uint64_t start_sample =
 298                         std::max((double)0, start_time.convert_to<double>() * samplerate);
 299                 const uint64_t end_sample = end_time.convert_to<double>() * samplerate;
 300
 301                 sample_range = std::make_pair(start_sample, end_sample);
 302         } else {
 303                 sample_range = std::make_pair(0, 0);
 304         }
 305
 306         // Construct the filter
 307         const vector<string> exts = format->extensions();
 308         QString filter = tr("%1 files ").arg(
 309                 QString::fromStdString(format->description()));
 310
 311         if (exts.empty())
 312                 filter += "(*.*)";
 313         else
 314                 filter += QString("(*.%1);;%2 (*.*)").arg(
 315                         QString::fromStdString(join(exts, ", *.")),
 316                         tr("All Files"));
 317
 318         // Show the file dialog
 319         const QString file_name = QFileDialog::getSaveFileName(
 320                 this, tr("Save File"), dir, filter);
 321
 322         if (file_name.isEmpty())
 323                 return;
 324
 325         const QString abs_path = QFileInfo(file_name).absolutePath();
 326         settings.setValue(SettingSaveDirectory, abs_path);
 327
 328         // Show the options dialog
 329         map<string, Glib::VariantBase> options;
 330         if (!format->options().empty()) {
 331                 dialogs::InputOutputOptions dlg(
 332                         tr("Export %1").arg(QString::fromStdString(
 333                                 format->description())),
 334                         format->options(), this);
 335                 if (!dlg.exec())
 336                         return;
 337                 options = dlg.options();
 338         }
 339
 340         StoreProgress *dlg = new StoreProgress(file_name, format, options,
 341                 sample_range, session_, this);
 342         dlg->run();
 343 }
 344
 345 void MainWindow::import_file(shared_ptr<InputFormat> format)
 346 {
 347         assert(format);
 348
 349         QSettings settings;
 350         const QString dir = settings.value(SettingOpenDirectory).toString();
 351
 352         // Construct the filter
 353         const vector<string> exts = format->extensions();
 354         const QString filter = exts.empty() ? "" :
 355                 tr("%1 files (*.%2)").arg(
 356                         QString::fromStdString(format->description()),
 357                         QString::fromStdString(join(exts, ", *.")));
 358
 359         // Show the file dialog
 360         const QString file_name = QFileDialog::getOpenFileName(
 361                 this, tr("Import File"), dir, tr(
 362                         "%1 files (*.*);;All Files (*.*)").arg(
 363                         QString::fromStdString(format->description())));
 364
 365         if (file_name.isEmpty())
 366                 return;
 367
 368         // Show the options dialog
 369         map<string, Glib::VariantBase> options;
 370         if (!format->options().empty()) {
 371                 dialogs::InputOutputOptions dlg(
 372                         tr("Import %1").arg(QString::fromStdString(
 373                                 format->description())),
 374                         format->options(), this);
 375                 if (!dlg.exec())
 376                         return;
 377                 options = dlg.options();
 378         }
 379
 380         load_file(file_name, format, options);
 381
 382         const QString abs_path = QFileInfo(file_name).absolutePath();
 383         settings.setValue(SettingOpenDirectory, abs_path);
 384 }
 385
 386 void MainWindow::setup_ui()
 387 {
 388         setObjectName(QString::fromUtf8("MainWindow"));
 389
 390         // Set the window icon
 391         QIcon icon;
 392         icon.addFile(QString(":/icons/sigrok-logo-notext.svg"));
 393         setWindowIcon(icon);
 394
 395         // Set up the initial view
 396         shared_ptr<pv::view::View> view = make_shared<pv::view::View>(session_, this);
 397         shared_ptr<QDockWidget> dock = make_shared<QDockWidget>(tr("Untitled"), this);
 398         dock->setWidget(view.get());
 399         addDockWidget(Qt::TopDockWidgetArea, dock.get());
 400         view_docks_[dock] = view;
 401
 402         // Setup the menu bar
 403         pv::widgets::HidingMenuBar *const menu_bar =
 404                 new pv::widgets::HidingMenuBar(this);
 405
 406         // File Menu
 407         QMenu *const menu_file = new QMenu;
 408         menu_file->setTitle(tr("&File"));
 409
 410         action_open_->setText(tr("&Open..."));
 411         action_open_->setIcon(QIcon::fromTheme("document-open",
 412                 QIcon(":/icons/document-open.png")));
 413         action_open_->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_O));
 414         action_open_->setObjectName(QString::fromUtf8("actionOpen"));
 415         menu_file->addAction(action_open_);
 416
 417         action_save_as_->setText(tr("&Save As..."));
 418         action_save_as_->setIcon(QIcon::fromTheme("document-save-as",
 419                 QIcon(":/icons/document-save-as.png")));
 420         action_save_as_->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_S));
 421         action_save_as_->setObjectName(QString::fromUtf8("actionSaveAs"));
 422         menu_file->addAction(action_save_as_);
 423
 424         action_save_selection_as_->setText(tr("Save Selected &Range As..."));
 425         action_save_selection_as_->setIcon(QIcon::fromTheme("document-save-as",
 426                 QIcon(":/icons/document-save-as.png")));
 427         action_save_selection_as_->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_R));
 428         action_save_selection_as_->setObjectName(QString::fromUtf8("actionSaveSelectionAs"));
 429         menu_file->addAction(action_save_selection_as_);
 430
 431         menu_file->addSeparator();
 432
 433         widgets::ExportMenu *menu_file_export = new widgets::ExportMenu(this,
 434                 device_manager_.context());
 435         menu_file_export->setTitle(tr("&Export"));
 436         connect(menu_file_export,
 437                 SIGNAL(format_selected(std::shared_ptr<sigrok::OutputFormat>)),
 438                 this, SLOT(export_file(std::shared_ptr<sigrok::OutputFormat>)));
 439         menu_file->addAction(menu_file_export->menuAction());
 440
 441         widgets::ImportMenu *menu_file_import = new widgets::ImportMenu(this,
 442                 device_manager_.context());
 443         menu_file_import->setTitle(tr("&Import"));
 444         connect(menu_file_import,
 445                 SIGNAL(format_selected(std::shared_ptr<sigrok::InputFormat>)),
 446                 this, SLOT(import_file(std::shared_ptr<sigrok::InputFormat>)));
 447         menu_file->addAction(menu_file_import->menuAction());
 448
 449         menu_file->addSeparator();
 450
 451         action_connect_->setText(tr("&Connect to Device..."));
 452         action_connect_->setObjectName(QString::fromUtf8("actionConnect"));
 453         menu_file->addAction(action_connect_);
 454
 455         menu_file->addSeparator();
 456
 457         action_quit_->setText(tr("&Quit"));
 458         action_quit_->setIcon(QIcon::fromTheme("application-exit",
 459                 QIcon(":/icons/application-exit.png")));
 460         action_quit_->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q));
 461         action_quit_->setObjectName(QString::fromUtf8("actionQuit"));
 462         menu_file->addAction(action_quit_);
 463
 464         // View Menu
 465         QMenu *menu_view = new QMenu;
 466         menu_view->setTitle(tr("&View"));
 467
 468         action_view_zoom_in_->setText(tr("Zoom &In"));
 469         action_view_zoom_in_->setIcon(QIcon::fromTheme("zoom-in",
 470                 QIcon(":/icons/zoom-in.png")));
 471         // simply using Qt::Key_Plus shows no + in the menu
 472         action_view_zoom_in_->setShortcut(QKeySequence::ZoomIn);
 473         action_view_zoom_in_->setObjectName(
 474                 QString::fromUtf8("actionViewZoomIn"));
 475         menu_view->addAction(action_view_zoom_in_);
 476
 477         action_view_zoom_out_->setText(tr("Zoom &Out"));
 478         action_view_zoom_out_->setIcon(QIcon::fromTheme("zoom-out",
 479                 QIcon(":/icons/zoom-out.png")));
 480         action_view_zoom_out_->setShortcut(QKeySequence::ZoomOut);
 481         action_view_zoom_out_->setObjectName(
 482                 QString::fromUtf8("actionViewZoomOut"));
 483         menu_view->addAction(action_view_zoom_out_);
 484
 485         action_view_zoom_fit_->setCheckable(true);
 486         action_view_zoom_fit_->setText(tr("Zoom to &Fit"));
 487         action_view_zoom_fit_->setIcon(QIcon::fromTheme("zoom-fit",
 488                 QIcon(":/icons/zoom-fit.png")));
 489         action_view_zoom_fit_->setShortcut(QKeySequence(Qt::Key_F));
 490         action_view_zoom_fit_->setObjectName(
 491                 QString::fromUtf8("actionViewZoomFit"));
 492         menu_view->addAction(action_view_zoom_fit_);
 493
 494         action_view_zoom_one_to_one_->setText(tr("Zoom to O&ne-to-One"));
 495         action_view_zoom_one_to_one_->setIcon(QIcon::fromTheme("zoom-original",
 496                 QIcon(":/icons/zoom-original.png")));
 497         action_view_zoom_one_to_one_->setShortcut(QKeySequence(Qt::Key_O));
 498         action_view_zoom_one_to_one_->setObjectName(
 499                 QString::fromUtf8("actionViewZoomOneToOne"));
 500         menu_view->addAction(action_view_zoom_one_to_one_);
 501
 502         menu_view->addSeparator();
 503
 504         action_view_sticky_scrolling_->setCheckable(true);
 505         action_view_sticky_scrolling_->setChecked(true);
 506         action_view_sticky_scrolling_->setShortcut(QKeySequence(Qt::Key_S));
 507         action_view_sticky_scrolling_->setObjectName(
 508                 QString::fromUtf8("actionViewStickyScrolling"));
 509         action_view_sticky_scrolling_->setText(tr("&Sticky Scrolling"));
 510         menu_view->addAction(action_view_sticky_scrolling_);
 511
 512         // TODO: Refactor this into a "new view" method
 513         if (view)
 514                 view->enable_sticky_scrolling(action_view_sticky_scrolling_->isChecked());
 515
 516         menu_view->addSeparator();
 517
 518         action_view_coloured_bg_->setCheckable(true);
 519         action_view_coloured_bg_->setChecked(true);
 520         action_view_coloured_bg_->setShortcut(QKeySequence(Qt::Key_B));
 521         action_view_coloured_bg_->setObjectName(
 522                 QString::fromUtf8("actionViewColouredBg"));
 523         action_view_coloured_bg_->setText(tr("Use &coloured backgrounds"));
 524         menu_view->addAction(action_view_coloured_bg_);
 525
 526         // TODO: Refactor this into a "new view" method
 527         if (view)
 528                 view->enable_coloured_bg(action_view_coloured_bg_->isChecked());
 529
 530         menu_view->addSeparator();
 531
 532         action_view_show_cursors_->setCheckable(true);
 533         action_view_show_cursors_->setIcon(QIcon::fromTheme("show-cursors",
 534                 QIcon(":/icons/show-cursors.svg")));
 535         action_view_show_cursors_->setShortcut(QKeySequence(Qt::Key_C));
 536         action_view_show_cursors_->setObjectName(
 537                 QString::fromUtf8("actionViewShowCursors"));
 538         action_view_show_cursors_->setText(tr("Show &Cursors"));
 539         menu_view->addAction(action_view_show_cursors_);
 540
 541         // TODO: Refactor this into a "new view" method
 542         if (view)
 543                 action_view_show_cursors_->setChecked(view->cursors_shown());
 544
 545         // Decoders Menu
 546 #ifdef ENABLE_DECODE
 547         QMenu *const menu_decoders = new QMenu;
 548         menu_decoders->setTitle(tr("&Decoders"));
 549
 550         menu_decoders_add_->setTitle(tr("&Add"));
 551         connect(menu_decoders_add_, SIGNAL(decoder_selected(srd_decoder*)),
 552                 this, SLOT(add_decoder(srd_decoder*)));
 553
 554         menu_decoders->addMenu(menu_decoders_add_);
 555 #endif
 556
 557         // Help Menu
 558         QMenu *const menu_help = new QMenu;
 559         menu_help->setTitle(tr("&Help"));
 560
 561         action_about_->setObjectName(QString::fromUtf8("actionAbout"));
 562         action_about_->setText(tr("&About..."));
 563         menu_help->addAction(action_about_);
 564
 565         menu_bar->addAction(menu_file->menuAction());
 566         menu_bar->addAction(menu_view->menuAction());
 567 #ifdef ENABLE_DECODE
 568         menu_bar->addAction(menu_decoders->menuAction());
 569 #endif
 570         menu_bar->addAction(menu_help->menuAction());
 571
 572         setMenuBar(menu_bar);
 573         QMetaObject::connectSlotsByName(this);
 574
 575         // Also add all actions to the main window for always-enabled hotkeys
 576         for (QAction* action : menu_bar->actions())
 577                 this->addAction(action);
 578
 579         // Setup the toolbar
 580         main_bar_ = new toolbars::MainBar(session_, *this);
 581
 582         // Populate the device list and select the initially selected device
 583         update_device_list();
 584
 585         addToolBar(main_bar_);
 586
 587         // Set the title
 588         setWindowTitle(tr("PulseView"));
 589
 590         // Setup session_ events
 591         connect(&session_, SIGNAL(capture_state_changed(int)), this,
 592                 SLOT(capture_state_changed(int)));
 593         connect(&session_, SIGNAL(device_selected()), this,
 594                 SLOT(device_selected()));
 595
 596         // TODO: Refactor this into a "new view" method
 597         if (view) {
 598                 connect(&session_, SIGNAL(trigger_event(util::Timestamp)), view.get(),
 599                         SLOT(trigger_event(util::Timestamp)));
 600                 connect(view.get(), SIGNAL(sticky_scrolling_changed(bool)), this,
 601                         SLOT(sticky_scrolling_changed(bool)));
 602                 connect(view.get(), SIGNAL(always_zoom_to_fit_changed(bool)), this,
 603                         SLOT(always_zoom_to_fit_changed(bool)));
 604         }
 605 }
 606
 607 void MainWindow::select_init_device()
 608 {
 609         QSettings settings;
 610         map<string, string> dev_info;
 611         list<string> key_list;
 612         shared_ptr<devices::HardwareDevice> device;
 613
 614         // Re-select last used device if possible but only if it's not demo
 615         settings.beginGroup("Device");
 616         key_list.push_back("vendor");
 617         key_list.push_back("model");
 618         key_list.push_back("version");
 619         key_list.push_back("serial_num");
 620         key_list.push_back("connection_id");
 621
 622         for (string key : key_list) {
 623                 const QString k = QString::fromStdString(key);
 624                 if (!settings.contains(k))
 625                         continue;
 626
 627                 const string value = settings.value(k).toString().toStdString();
 628                 if (!value.empty())
 629                         dev_info.insert(std::make_pair(key, value));
 630         }
 631
 632         if (dev_info.count("model") > 0)
 633                 if (dev_info.at("model").find("Demo device") == std::string::npos)
 634                         device = device_manager_.find_device_from_info(dev_info);
 635
 636         // When we can't find a device similar to the one we used last
 637         // time and there is at least one device aside from demo, use it
 638         if (!device) {
 639                 for (shared_ptr<devices::HardwareDevice> dev : device_manager_.devices()) {
 640                         dev_info = device_manager_.get_device_info(dev);
 641
 642                         if (dev_info.count("model") > 0)
 643                                 if (dev_info.at("model").find("Demo device") == std::string::npos) {
 644                                         device = dev;
 645                                         break;
 646                                 }
 647                 }
 648         }
 649
 650         select_device(device);
 651         update_device_list();
 652
 653         settings.endGroup();
 654 }
 655
 656 void MainWindow::load_init_file(const std::string &file_name,
 657         const std::string &format)
 658 {
 659         shared_ptr<InputFormat> input_format;
 660
 661         if (!format.empty()) {
 662                 const map<string, shared_ptr<InputFormat> > formats =
 663                         device_manager_.context()->input_formats();
 664                 const auto iter = find_if(formats.begin(), formats.end(),
 665                         [&](const pair<string, shared_ptr<InputFormat> > f) {
 666                                 return f.first == format; });
 667                 if (iter == formats.end()) {
 668                         cerr << "Unexpected input format: " << format << endl;
 669                         return;
 670                 }
 671
 672                 input_format = (*iter).second;
 673         }
 674
 675         load_file(QString::fromStdString(file_name), input_format);
 676 }
 677
 678
 679 void MainWindow::save_ui_settings()
 680 {
 681         QSettings settings;
 682
 683         map<string, string> dev_info;
 684         list<string> key_list;
 685
 686         settings.beginGroup("MainWindow");
 687         settings.setValue("state", saveState());
 688         settings.setValue("geometry", saveGeometry());
 689         settings.endGroup();
 690
 691         if (session_.device()) {
 692                 settings.beginGroup("Device");
 693                 key_list.push_back("vendor");
 694                 key_list.push_back("model");
 695                 key_list.push_back("version");
 696                 key_list.push_back("serial_num");
 697                 key_list.push_back("connection_id");
 698
 699                 dev_info = device_manager_.get_device_info(
 700                         session_.device());
 701
 702                 for (string key : key_list) {
 703                         if (dev_info.count(key))
 704                                 settings.setValue(QString::fromUtf8(key.c_str()),
 705                                                 QString::fromUtf8(dev_info.at(key).c_str()));
 706                         else
 707                                 settings.remove(QString::fromUtf8(key.c_str()));
 708                 }
 709
 710                 settings.endGroup();
 711         }
 712 }
 713
 714 void MainWindow::restore_ui_settings()
 715 {
 716         QSettings settings;
 717
 718         settings.beginGroup("MainWindow");
 719
 720         if (settings.contains("geometry")) {
 721                 restoreGeometry(settings.value("geometry").toByteArray());
 722                 restoreState(settings.value("state").toByteArray());
 723         } else
 724                 resize(1000, 720);
 725
 726         settings.endGroup();
 727 }
 728
 729 void MainWindow::session_error(
 730         const QString text, const QString info_text)
 731 {
 732         QMetaObject::invokeMethod(this, "show_session_error",
 733                 Qt::QueuedConnection, Q_ARG(QString, text),
 734                 Q_ARG(QString, info_text));
 735 }
 736
 737 void MainWindow::update_device_list()
 738 {
 739         main_bar_->update_device_list();
 740 }
 741
 742 void MainWindow::load_file(QString file_name,
 743         std::shared_ptr<sigrok::InputFormat> format,
 744         const std::map<std::string, Glib::VariantBase> &options)
 745 {
 746         const QString errorMessage(
 747                 QString("Failed to load file %1").arg(file_name));
 748
 749         try {
 750                 if (format)
 751                         session_.set_device(shared_ptr<devices::Device>(
 752                                 new devices::InputFile(
 753                                         device_manager_.context(),
 754                                         file_name.toStdString(),
 755                                         format, options)));
 756                 else
 757                         session_.set_device(shared_ptr<devices::Device>(
 758                                 new devices::SessionFile(
 759                                         device_manager_.context(),
 760                                         file_name.toStdString())));
 761         } catch (Error e) {
 762                 show_session_error(tr("Failed to load ") + file_name, e.what());
 763                 session_.set_default_device();
 764                 update_device_list();
 765                 return;
 766         }
 767
 768         update_device_list();
 769
 770         session_.start_capture([&, errorMessage](QString infoMessage) {
 771                 session_error(errorMessage, infoMessage); });
 772 }
 773
 774 void MainWindow::closeEvent(QCloseEvent *event)
 775 {
 776         save_ui_settings();
 777         event->accept();
 778 }
 779
 780 void MainWindow::keyReleaseEvent(QKeyEvent *event)
 781 {
 782         if (event->key() == Qt::Key_Alt) {
 783                 menuBar()->setHidden(!menuBar()->isHidden());
 784                 menuBar()->setFocus();
 785         }
 786         QMainWindow::keyReleaseEvent(event);
 787 }
 788
 789 void MainWindow::show_session_error(
 790         const QString text, const QString info_text)
 791 {
 792         QMessageBox msg(this);
 793         msg.setText(text);
 794         msg.setInformativeText(info_text);
 795         msg.setStandardButtons(QMessageBox::Ok);
 796         msg.setIcon(QMessageBox::Warning);
 797         msg.exec();
 798 }
 799
 800 void MainWindow::on_actionOpen_triggered()
 801 {
 802         QSettings settings;
 803         const QString dir = settings.value(SettingOpenDirectory).toString();
 804
 805         // Show the dialog
 806         const QString file_name = QFileDialog::getOpenFileName(
 807                 this, tr("Open File"), dir, tr(
 808                         "Sigrok Sessions (*.sr);;"
 809                         "All Files (*.*)"));
 810
 811         if (!file_name.isEmpty()) {
 812                 load_file(file_name);
 813
 814                 const QString abs_path = QFileInfo(file_name).absolutePath();
 815                 settings.setValue(SettingOpenDirectory, abs_path);
 816         }
 817 }
 818
 819 void MainWindow::on_actionSaveAs_triggered()
 820 {
 821         export_file(device_manager_.context()->output_formats()["srzip"]);
 822 }
 823
 824 void MainWindow::on_actionSaveSelectionAs_triggered()
 825 {
 826         export_file(device_manager_.context()->output_formats()["srzip"], true);
 827 }
 828
 829 void MainWindow::on_actionConnect_triggered()
 830 {
 831         // Stop any currently running capture session
 832         session_.stop_capture();
 833
 834         dialogs::Connect dlg(this, device_manager_);
 835
 836         // If the user selected a device, select it in the device list. Select the
 837         // current device otherwise.
 838         if (dlg.exec())
 839                 select_device(dlg.get_selected_device());
 840
 841         update_device_list();
 842 }
 843
 844 void MainWindow::on_actionQuit_triggered()
 845 {
 846         close();
 847 }
 848
 849 void MainWindow::on_actionViewZoomIn_triggered()
 850 {
 851         shared_ptr<pv::view::View> view = get_active_view();
 852         if (view)
 853                 view->zoom(1);
 854 }
 855
 856 void MainWindow::on_actionViewZoomOut_triggered()
 857 {
 858         shared_ptr<pv::view::View> view = get_active_view();
 859         if (view)
 860                 view->zoom(-1);
 861 }
 862
 863 void MainWindow::on_actionViewZoomFit_triggered()
 864 {
 865         shared_ptr<pv::view::View> view = get_active_view();
 866         if (view)
 867                 view->zoom_fit(action_view_zoom_fit_->isChecked());
 868 }
 869
 870 void MainWindow::on_actionViewZoomOneToOne_triggered()
 871 {
 872         shared_ptr<pv::view::View> view = get_active_view();
 873         if (view)
 874                 view->zoom_one_to_one();
 875 }
 876
 877 void MainWindow::on_actionViewStickyScrolling_triggered()
 878 {
 879         shared_ptr<pv::view::View> view = get_active_view();
 880         if (view)
 881                 view->enable_sticky_scrolling(action_view_sticky_scrolling_->isChecked());
 882 }
 883
 884 void MainWindow::on_actionViewColouredBg_triggered()
 885 {
 886         shared_ptr<pv::view::View> view = get_active_view();
 887         if (view)
 888                 view->enable_coloured_bg(action_view_coloured_bg_->isChecked());
 889 }
 890
 891 void MainWindow::on_actionViewShowCursors_triggered()
 892 {
 893         shared_ptr<pv::view::View> view = get_active_view();
 894         if (!view)
 895                 return;
 896
 897         const bool show = !view->cursors_shown();
 898         if (show)
 899                 view->centre_cursors();
 900
 901         view->show_cursors(show);
 902 }
 903
 904 void MainWindow::on_actionAbout_triggered()
 905 {
 906         dialogs::About dlg(device_manager_.context(), this);
 907         dlg.exec();
 908 }
 909
 910 void MainWindow::sticky_scrolling_changed(bool state)
 911 {
 912         action_view_sticky_scrolling_->setChecked(state);
 913 }
 914
 915 void MainWindow::always_zoom_to_fit_changed(bool state)
 916 {
 917         action_view_zoom_fit_->setChecked(state);
 918 }
 919
 920 void MainWindow::add_decoder(srd_decoder *decoder)
 921 {
 922 #ifdef ENABLE_DECODE
 923         assert(decoder);
 924         session_.add_decoder(decoder);
 925 #else
 926         (void)decoder;
 927 #endif
 928 }
 929
 930 void MainWindow::capture_state_changed(int state)
 931 {
 932         main_bar_->set_capture_state((pv::Session::capture_state)state);
 933 }
 934
 935 void MainWindow::device_selected()
 936 {
 937         // Set the title to include the device/file name
 938         const shared_ptr<devices::Device> device = session_.device();
 939
 940         if (!device) {
 941                 main_bar_->reset_device_selector();
 942                 return;
 943         }
 944
 945         const string display_name = device->display_name(device_manager_);
 946         setWindowTitle(tr("%1 - PulseView").arg(display_name.c_str()));
 947 }
 948
 949 } // namespace pv